Chris Matthews on message to GOP senators: 'Not only did [Trump] do this... he will keep doing it'

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Chris Matthews says Democratic impeachment manager Rep. Adam Schiff is arguing that Pres. Trump's actions are part of a pattern that will only stop if he is removed from office. Matthews says Schiff is telling Republicans, "Not only did he do this and you guys know he did it...He will keep doing it 'til the last dog dies."